Author: Robert Hyatt
Date: 19:51:40 11/09/00
Go up one level in this thread
On November 09, 2000 at 19:38:42, Uri Blass wrote:
>On November 09, 2000 at 18:33:05, Robert Hyatt wrote:
>
><snipped>
>>OK... Here is a good point for discussion. My evaluation at this point
>>is somewhere between -.2 and -1.0, depending on how deep you let it
>>search. Here is the position:
>>
>>[D]2rr2k1/1p1b2p1/p3p2n/2Bp3B/1P3P1Q/PP5R/1q5P/4R2K b
>>
>>It is black to move. White has the rook and queen doubled on the h file.
>>Black has the h-file blocked with the knight on h6. White has no way to
>>drive the knight off, and no easy way to capture the knight with some sort
>>of trade. IE the h-file is not going to be used for an attack very easily.
>>
>>Do you (or anybody) think that white is really up the equivalent of one
>>piece (+3.42) here?
>
>I think that the last move Kh1 was a mistake and better was Qe7 and white is
>winning for example Qe7 e5 Rg3 exf4 Rg2 Qc3 Rd1
>
>Tiger13 is stronger and has no problem to find Qe7 but gambittiger prefers
>speculation of 3 pawns and not winning material.
>
>Gambittiger did not like Qe7 because of Qf6 and white wins only the excange that
>is not enough for 3 pawns.
>
>
><snipped>
>>>70...Ne8 71.Rxc6 { Score: 0,96
>>
>>Prior to this point, I would have expected a draw. two pieces for a rook
>>is generally an advantage. I would not expect to lose such a position very
>>often since the two pieces are generally much stronger. This "bad trade"
>>score has been influencing the scores crafty produces for quite a while in
>>the game. It is one of those 'speculative' type scores that just happens to
>>be wrong here, but it is right far more often than it is wrong.
>
>Gambittiger also expected a draw(evaluation +0.24 before Ne8) and I think that
>the mistake of crafty was 70...Ne8 and I guess that after 70...Nd5
>
>Uri
I let crafty chug for a while after Qe7, and it likes e5, with a score that
is not much different from the Kh1 score. IE it doesn't see any loss of
material that It reports... this was through depth=12...
Here is the 13 ply output:
13 10:54 -1.39 39. ... e5 40. Rh4 e4 41. Bb6 Qf6 42.
Bxd8 Rxd8 43. Qxf6 gxf6 44. Kf2 Rc8
45. Re2 Nf5 46. Rg4+ Kh7
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.